N, K = map(int,input().split())
A = [input() for _ in range(N)]

ans = [["" for _ in range(N*K)] for _ in range(N*K)]

x = 0; y = 0
for i in range(N):
    for j in range(N):
        for k in range(K):
            for l in range(K):
                ans[K*i + k][K*j + l] = A[i][j]

for i in range(N*K):
    print("".join(ans[i]))